Carton for sectoral canopies



March 25, 1930. G. MCL. WELLS 1,751,782

CARTON FOR SECTORAL CANOPIES Filed March 29, 1929 2 Sheets-Sheet l l 01ml f3 l f4 WUI March 25, 1930. G. Mel.. wELLs CARTON FOR SECTORAL CANOPIS Filed March 29, 1929 2 Sheets-Sheet 2 dbf/7951.

Patented Mar. 25, 1930.

UNITED STATES PATENT OFFICE grenen MCLEAN WELLS, on MAcoMB, iLLiivois, as'sIeNon To AMnnioAN STEEL PRODUCTS co., or rincorre, ILLINOIS., a conroaafrioiv orjILLINoIs camion non sncrozaaL caivorms Application led March 29, 1,929. Serial No. 350,853.

M y invention relates to cartons for packing articles of truncated triangular or sector shape. Generally speaking, the objects of my invention are those of providing a single piece folding` carton which can be carried in stock in fiat sheet form, and which can readily be folded around an Aarticle (or stack of articles) of the above mentioned shape for snugly housing the packed article without requiring the use of excelsior or other packing material. Furthermore, my invention Vaims to provide a carton for this purpose which will include aps so shaped and arranged that the outer flaps ofthe carton can readily be secured to each other with gummed tape or the like.

Hollow articles having the shape of a truncated cone-such as brooder hoods or lamp shades-cannot easily or economically be packed in their erected form to avoid damage in transit. Besides, their erected packing requires unduly bulky boxes or crates and involves undesirably high shipping expenses as Well as undesirably large space for storing the packed articles. .Y

lVhen such articles are constructed in knock-down form and of bendable material, the storage space may be quite small at the factory for the sector-shape parts in their flat form, but the outline of such parts has still made it diflicult and expensive to pack them safely for shipment.' For example, when inserted in a rectangular carton or a folding box, the shape of-such parts will not permit any considerable portion of their ldges to fit against the sides of a carton or Consequently, considerable excelsior or other packing must also be wedged into the carton; and with any heavy articles (such as sectional portions of sheet metal brooder hoods) the weight of these articles compresses the packing material when the package is tossed about, thereby often damaging either the carton or the packed articles, or both. Besides, the waste space for the packing involves the use ofneedlessly large cartons, thereby increasing both the cost of the cartons and the storage space required for the packed goods. i

' Mypresent. invention aims to overcome all of these objections by providing an economically constructed and easily erected carton in which articles of truncated triangular or truncated sector shape can be packed snugly and` without requiring excelsior or other packing material.

Illustrative of my invention, Fig. l is a plan view of a carton embodying my invention.

Fig. 2 is a section taken alongthe line 2 2y of Fig. l. i

Fig. 3 is a'section taken along the line 353 of Fig. l.

Fig. 4 is an enlarged plan view of the same carton with one flap. swung open and partially broken away, and withV dotted lines showing portions of the upper and lower flaps.

Fig. 5 shows the same carton in its flat forms, together with dotted lines showing the outline of a brooder hood section adapted to be packed in this carton.

In one of its immediate commercial uses, my invention is particularly suited for packingy the conical hoods which are commonly used in connection with brooder stoves. Each such hood can be made economically of four counterpart steel sections provided at their edges with perforations for receiving the bolts which unite these sections when the brooder hood is erected, thesections being formed of agrade of fiat sheet steel which can be bent manually to the desired curvature. One commercial shape of such a brooder hood sector, as shown in dotted lines in Fig. 5, has upwardly converging edges l, a downwardly bowed lower edge 2, and an upper edge comprising .a downwardly bowed main medial portion 3 'disposedbetween two alined straight upper end portions t.

To pack'sections of such truncated sector shape, I employ a carton formedof cardboard .or other suitable material and of the shape shown in Fig. 5, in which iigure certain lines (aside from those outlining the article which is to be packed) indicate the lines along which the carton sheet is to be folded when erecting it. 'Y

Thiscarton blank is symmetrical with ref, spect to its medial axis 5 and inGludeS a tIuIr' CTI cated triangular central portion 6 having its upper edge 7 parallel to and spaced from its lower edge 8 by a distance corresponding to the effective height of one of the sectors which are to be packed in the carton. These upper and lower edges 7 and 8 are connected by lateral edges 9 converging upwardly at thesame angle as the converging sector edges 1, and the upper edge 7 corresponds in length to the effective width of the top of the truncated' sector-shaped article which is to be packed.

Extending outwardly from the four edges of the central blank portion 6 (which alords the bottom of the erected carton)-are fourrectangular wings ot approximately equal width, each wing being ofthe same vlength as that edge of the central portion from which it extends; namely, a bottom wing 10, t-wo side wings`11, and a top wing 12. Each of t these four wings has a flap.` extending outwardly from it and of the same basal length as the wing from which it extends.`

A The bottoni flap y13 tapers outwardly `at an angle not greater' than that of the base angle v' 14 of the central or bottom portion 6, and this bottom flap may be' of relatively shortwidth inV -proportion to the height of thesaid` central portion 6. The top flap 15 may be rectangular and also is desirablyof less width than the difference between the width of the bottom tlap 13 and the height :(along the axis of the central or bottom portion 6 ot' the carton blank. Y

rllhe side flaps 16 each correspond in shape and size to one lateral half of the said bottom portion 6. That is to say, eachside flap has right-angled outer corners, has its free outer edge 16A of the sameV length as the height of the central (bottom) portion 6, has its prospective upper side edge`16B of halt the length of the upper edge of the portion 6, and has its other side edge 16C of half the length of the lower edge 8 of the portion 6. With this shaping, the edges 16B and 16C are parallel, and the acute angle `17* between the attached edge of each side flap and the longer side edge of this flap is` equal to each of the base angles 14 of the `central .or bottom cartonl portion.

When superposed sectoreshaped plates are laid on the bottom 'section 6 as shown in Fig; 5and the carton is toldedup, the side wings 11 extend close to the converging edgesofthe plates, while the4 top and bottom Awings (12 and respectively engage thefupper and lower edges of the plates. 'f The'top'iand bottom laps (15 and'13) are thenvfoldedf over the top of the plates as show in Figa-3,' after which the twoside laps'16 are oldedover the top and bottomtlaps, thus erecting the carton as shown in Figsl, 2..andi3.1'='

'Owing to the size andshape otthe various portions of the carton, the free end .edges 16Aof the sideiaps: then' abut against yeach other, while 'the adjacent ends `155iotthefwsings vdone quickly.and,'owing to the snug embracing of the packed contents, the resulting package will stand rough handling in transit in spite of the weight of its contents.v Y

Since the bends at the scored juncturey lines between the various parts of the carton need not be sharp, the width of'all four wings (10,

11 and 12 may be uniform in practice. However, with unusually thick material for the carton, the side wings 11 might be slightly wider than the top and bottom wings (12- and 13) -so as to allow for the thickness ofthe latter.' So also, the carton might be designed for a little clearance between the converging edges 11 of the sector shaped objects and the lsBide wings 11 of the carton, as indicated in ig.5. c Y However, for object parts of standard size, I preferably construct the carton so that all four of the said wings will fit snugly against the contentsof the carton, and in Fig. 5 am only illustrating a slight spacing to avoid a confusion ot lines in the drawing. Of course, the carton blank is scoredalong all of the fold lines and in this tlat form occupies very little space. So also, sincethe score lines and the outer edge portions of the-carton blank are all straight lines, the carton is easily manufactured. A y

When such a carton is used for packing articles of truncated triangularform all four sides of such an article may obviously bear snugly against the four side wings of the carton. TWith a truncated sector shape for the packed article or articles, it might be assumed that the convex edge of suchy an article would bulge out the side wing 10 and hence would leave this article ree to slideY aroundin the carton. thereby resulting -in a possible damage to the carton. However, I have found this to be untrue in practice, for the simple reason that a downward bulging of the bottom wing lOrwillvelectiVely shorten the latter, thereby reducing the angle-between the side wings 11 and causing these side wings to grip the convergingedges of the packed ob-A ject. Consequently, f my carton is equally suitable for use with'objects of either-truncated triangular shape or of truncated sector shape, and particularly solves the problem-of economically' packaging articlesottruncated sector vshaped contour; {although 1- .-I dogjn'ot Wish to be limited to the uses of my carton or to the particular shape or other details above described.

I claim as my invention:V

l. A :Foldable carton sheet comprising a laterally symmetrical central portion having upwardly converging side edges and having parallel top and bottom edges, four rectangular Wing portions of equal Width respectively extending outwardly from the four edges of the said central portion and each of the saine length as the edge from which it extends, and four iiap portions respectively extending from the free edges of the Wing portions and each having its inner edge o1 the same length as the Wing portion from which it extends; each of the two flap portions connected by wings to the converg ing edges of the central carton portion corresponding in size and shape to one lateral half of the said central portion.

2A A carton for an article `having the lshape of a. truncated sector or triangle Jformed from a single sheet and comprising a carton bottom of truncated triangular form having its side edges diverging at the same angle as the said sector or triangle and its other two edges parallel and spaced by the effective height of the said sector or triangle; tour upright carton sides respectively connected to the four edges of the said bottom and each of the saine length as the edge to Which it is connected; and four flaps respectively connected to the outer edges of the said sidesl and each having its connected edge otthe same length as the carton side to Which it is connected; the flaps connected to the carton sides adjacent to the diverging edges of the carton bottom having a joint conliguration and size corresponding to that of the said bottom.

3. A carton for an article having the shape of a truncated sector or triangle, formed its side edges diverging at the sameangle as the said sector or triangle and its other two edges parallel and spaced by the elective height of the said sector or triangle; four upright carton sidesrespectively connected to the four edgesof the said bottom and each of the saine length as the edge to Which it is connected; and four flaps respectively connected to the outer edges of the said sides and each having its connected edge of the same length as thecarton side to which it is connected; the i'laps connected to the carton sides adjacent to the diverging edges of the carton bottom having their outer edges adapted to abut against each other when the carton is folded up and then having a joint size and shape corresponding to that of the carton bottom. l

Signed at Macomb, Illinois, March 25th,

GEORGE MCLEAN WELLS'.

from a single sheet and comprising: a carton f bottom of truncated triangular form having its side edges diverging at the same angle as converging edges of the said sector or triangle, the said bottom having its other two edges parallel and spaced by the effective height of the said sector or triangle; four upright carton sides respectively extending from the four edges of the said bottom and each of the same length as the edge of the bottom from which it extends; and four flaps respectively connected to the outer edges of the said sides and each having its connected edge of the same length as the carton side to Which it is connected; the flaps connected to the carton sides adjacent to the diverging edges of the carton bottom being each ofthe shape and size of one lateral half of the said bottom.

4. A carton for an article having the shape f of a-truncated sector or triangle, formed from asingle sheet and comprising; k,a carton bottom of truncated triangular form having 

